Base | Representation |
---|---|
bin | 11000101001001010… |
… | …10000001110111111 |
3 | 1021011000222102000000 |
4 | 30110211100032333 |
5 | 204043413241111 |
6 | 10024453205343 |
7 | 645566642511 |
oct | 142445201677 |
9 | 37130872000 |
10 | 13230212031 |
11 | 567a123133 |
12 | 2692930853 |
13 | 132aca663a |
14 | 8d7173bb1 |
15 | 526777c56 |
hex | 3149503bf |
13230212031 has 56 divisors (see below), whose sum is σ = 21325566720. Its totient is φ = 8177735376.
The previous prime is 13230212011. The next prime is 13230212071. The reversal of 13230212031 is 13021203231.
13230212031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 13230212031 - 219 = 13229687743 is a prime.
It is a super-2 number, since 2×132302120312 (a number of 21 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 13230211995 and 13230212013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13230212011) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 640836 + ... + 661158.
Almost surely, 213230212031 is an apocalyptic number.
13230212031 is a deficient number, since it is larger than the sum of its proper divisors (8095354689).
13230212031 is an equidigital number, since it uses as much as digits as its factorization.
13230212031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20407 (or 20392 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
Adding to 13230212031 its reverse (13021203231), we get a palindrome (26251415262).
The spelling of 13230212031 in words is "thirteen billion, two hundred thirty million, two hundred twelve thousand, thirty-one".
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